[#llvm-toHex-09]
= xref:llvm.adoc[llvm]::toHex
:relfileprefix: ../
:mrdocs:

Convert buffer `Input` to its hexadecimal representation. The returned string is double the size of `Input.`

== Synopsis

Declared in `<llvm/ADT/StringExtras.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
toHex(
    xref:llvm/ArrayRef-08.adoc[ArrayRef<uint8_t>] Input,
    bool LowerCase,
    xref:llvm/SmallVectorImpl-06c.adoc[SmallVectorImpl<char>]& Output);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *Input*
| bytes to encode
| *LowerCase*
| when true, use lowercase hex digits
| *Output*
| destination for the hex characters
|===


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